30×50 barndominium cost.
A 30×50 barndominium (1,500 sq ft) runs about $107,900 – $260,200 for an economy build and up to $164,350 – $390,700 fully finished — roughly $72 – $260/sq ft. Every figure here comes straight from our cost engine.
Overview
The 30×50 barndominium.
A 30×50 barndominium delivers 1,500 square feet of living space — the size of a comfortable two- or three-bedroom home — in an efficient single-story rectangle that is one of the most cost-effective ways to build a custom house.
The narrow-but-long 30×50 footprint suits a classic open-concept layout: living, kitchen, and dining across the front, bedrooms and baths down the back, with the post-frame shell allowing wide spans and few interior load-bearing walls. It is small enough to finish to high standards on a sensible budget and large enough to live in full-time.
Unlike a bare shop, a barndominium is full residential construction, and the estimates here reflect that. They are generated by the cost engine with a complete finish — spray-foam insulation, full interior, plumbing, HVAC, and septic — so the numbers represent a livable home, not a shell.
Estimated cost
Economy, average & premium.
Three real engine-computed builds for a 30×50 barndominium, from a bare finished build to a fully outfitted one.
$107,900 – $260,200
$72 – $173/sq ft · avg $170,500
Slab, batt insulation, partial interior, full utilities.
Bare-bones build — the lowest-cost way to get the structure standing and usable.
$158,450 – $376,650
$106 – $251/sq ft · avg $246,100
Spray foam, full residential interior, all utilities.
The typical owner’s build — a practical, finished result most people land on.
$164,350 – $390,700
$110 – $260/sq ft · avg $255,050
Taller walls, more glazing and doors, full premium finish.
Fully outfitted — higher finish, more openings, and conditioned space.
Cost per square foot
30×50 cost per square foot.
| Finish level | Total estimate | Per sq ft |
|---|---|---|
| Economy | $107,900 – $260,200 | $72 – $173/sq ft |
| Average | $158,450 – $376,650 | $106 – $251/sq ft |
| Premium | $164,350 – $390,700 | $110 – $260/sq ft |
Over 1,500 sq ft, this 30×50 build spans about $72 – $260/sq ft. The bigger the footprint, the lower the per-foot cost tends to run — fixed costs spread across more area.
Adjust options in the calculatorPopular uses
What people build a 30×50 for.
- Full-time two- or three-bedroom residence
- Open-concept rural or acreage home
- Downsizer or retirement single-level living
- Guest house or multi-generational secondary home
- Short-term rental or weekend property
Pros & cons
Is 30×50 the right size?
Pros
- A genuine custom home for less than conventional framing
- Single-story 1,500 sq ft is efficient to build and heat
- Open spans allow flexible, wall-light floor plans
- Post-frame shell goes up fast, shortening the build
Cons
- Interior finishes cost the same as any home — the bulk of the budget
- Narrower 30-ft width limits some floor-plan options
- Needs residential-grade permitting and often specialized financing
- Less attached shop space than a wider barndo footprint
Cost factors
What drives a 30×50 barndominium's price.
The levers that move your total the most — worth pricing carefully before you commit.
- Interior finish level — flooring, cabinetry, and trim are the largest swing in the budget
- Kitchen and bath count — plumbing fixtures and finishes drive cost more than square footage
- HVAC and spray foam — a conditioned home envelope is a significant, non-optional line
- Septic and well — rural barndominium sites often add these as major separate costs
- Window and door package — a home-grade glazing package costs far more than a shop’s
Materials needed
What goes into the build.
The major scope items in an average-finish 30×50 barndominium, as priced by the engine.
Construction timeline
How long it takes.
An average-finish 30×50 barndominium typically takes 15 – 32 weeks on site once materials arrive and permits are in hand. The bare shell goes up fastest; concrete cure time, insulation, and interior finish add the rest. Permitting lead time, weather, and crew availability shift the real-world schedule.
Example breakdown
Where the money goes.
A line-by-line look at an average-finish 30×50 build — every line is a real engine cost item.
| Line item | Detail | Estimated cost |
|---|---|---|
| Barndominium shell | 30×50 • 10-ft walls | $42,300 – $91,650 |
| Concrete slab | 4-in reinforced | $7,500 – $15,000 |
| Premium insulation | Closed-cell spray foam | $6,750 – $13,500 |
| Overhead doors | 1 × insulated | $1,100 – $2,800 |
| Walk doors | 2 × exterior | $800 – $2,200 |
| Windows | 10 installed | $3,500 – $9,000 |
| Full interior finish | $82,500 – $195,000 | |
| Electrical service | Panel + rough-in | $1,500 – $6,000 |
| Plumbing | Rough-in + connection | $2,500 – $10,000 |
| HVAC | Conditioned area | $6,000 – $16,500 |
| Septic system | Tank + field | $4,000 – $15,000 |
Average-tier line items at national-average pricing. Totals reflect the low–high range each line can take; your state and choices shift the figures — the calculator applies them live.
Planning & budgeting
Budgeting your 30×50 build.
A barndominium budget is dominated by interior finish, not by the shell — so the tiers above move mostly on how you finish 1,500 sq ft, not on the structure. The single most effective way to control cost is to keep the plumbing stacked, the layout simple, and the finish selections disciplined; those choices swing the total far more than the dimensions do.
Treat the shell and the finish as two budgets. The post-frame shell goes up quickly and predictably; the interior is where conventional home-building costs and timelines apply in full. Many owners dry-in the shell, then finish in phases — but for a primary residence, financing usually requires a complete, code-compliant home at occupancy, so confirm your lender’s requirements early.
Because this is a dwelling, plan for residential permitting, an engineered foundation, and — on rural land — septic, well, and utility runs that a shop would not need. These site and systems costs are easy to omit from a shell quote and are essential to a realistic barndominium budget.
The verdict
Should you build 30×50?
A 30×50 barndominium is ideal if you want a right-sized custom home and value efficiency over sprawl. At 1,500 sq ft it keeps both the build cost and the long-term utility bills down while still offering true full-time living space.
If you also want significant attached shop or garage space, step up to a 40×60, which leaves room for living quarters at one end and a working shop at the other. If living space is all you need, the 30×50 is the leaner, lower-cost choice.
FAQ
30×50 barndominium questions.
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